Machine for printing in different colors



2 Sheets-Sheet 1.

A. A.. DUNK. MACHINE ION PRINTING IN DIIjINNBNT GoLoNs.

Patented Mar. 10,1868.

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MACHINE FOR PRINTING III-DIFFERENT COLORS. NQ. 75,394. Patented Ma.1. 10,V 1868.

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`'.lO ALL WI-IOM IT-MAY CQNCERN:

Be it known that I, AfA. DUNK, of Philadelphia, Pennsylvania, have invented a Machine for Printing in Diferent Colors; and I do hereby declare the following to be a full, clear, and exact description of the saine. My invention consistsof certain mechanism, fully described hereafter, by which ornamental andpictorial impressions of difereut forms andin d'erent colors -may be imparted to a sheet oflpaper with accuracy and precision.

In order to enable others skilled-in the art to make and use my invention, Iwill no'w proceed to describe its construction and operation,` reference being had to the accompanying drawing which forms a part of this speciiication, and-in whichl Figure 1 (Drawing No. 1) is a side elevation-pt' my improved machine for printingi'n different colors.

Figure 2,V a plan ,view't i Figure 3, (Drawing No. 2,) a vertical section on the line 1-2, `iig. 2.

Figure 4, a detached view, partly in section, of a portion of the press, showing the operation of the inking--rollers. I

Figures 5 and 6, detached views of parte of theA press; and

Figure 7, a diagram for illustrating the Aoperation of the machine.

Figure 8, a diagram illustrating a modified machine.

Similar letters refer to similar parte throughout the several'views.

A and A' `are the opposite s'ideframes of -Vthe mnchine,in which turns the main driving-shaft B, a pinion, a, on the latter, gearing vinto a cog-wheel,v C, secured to one end of a cylinder, D', on a shaft, E, which also turns inthe side-frames.A -To a shaft, F, turning in the said frames, is secured a cylinder, Gr, which is of the same diameter as the `cylinderD", measuring across the printing-forms attached tc theat'cr, As the cog-wheel C gears into a similar wheel H on the same shaft as the cylinder Gr, the two cylinders will revolve-at the same speed, and simultaneously witheach other. The `two cylinders are s'o arranged in respect teca-ah other that' the surface of the'cylinder G is'jin contact' with the forms von the cylinder D. [The cylinder G'is in the present instance separated into five equal portions b'y-the' deep grooves b, which extend across its face, iig. 8, each portion forming aV separate segmental platen for the press, as more fully described hereafter.

, A cog-wheel, I, adjacent to, but of greater diameter than, the wheel H, turns on a stationary-disk, c, secured to the side-frame Aa nd also gears into the'wheel G of the cylinder D', and a similar wheel, I', at the opposite end of the cylinder G, gears into a cog-wheel, C', secured to the cylinder D.

It vshould be here understood that the stationary disks c, on which the cog-wheels I and- Ilturn, are placed eecentrically with the shaft F, but that the centre of each is on a line, z', drawn through the centres of 'the shafts E and F, as seen in iig. 1. Y .I

The wheels I and I' are secured together by rods 'd all d, dto., and turn independently'of the cylinder G, the shaft F of the latterpassing through -their bearing-disks c, as shown in iig. 1. The diameter of each of the wheels I end I, in respect to that of thewheel H, is as six of the former to iveof the latter, so that the wheels Iv and I -will make but vesixths of a revolutionwhilb the latter completes one revolution. The -rods dare situated at equal distances apart from each other, and -at the same distance from Ythe centre of rotation of the wheels I and I', and the wheels are so adjusted in respect to the cylinder G that when the par-ts are Vin. the position shown in g..3, the rod d of the wheels shallbe contained within that one of` the grooves of the cylinder marked b. If the cylinder G and wheels'he now turned in the direction of the arrow, fig. 3, until the former has completed a revolution, it will be evident from the above, that the rod d, instead of ther'od dl, will he contained within the grqovel. The purpose of this will be rendered apparent' hereafter; y

Adjacentl to each of the rods d, and turning in the rims of the wheels. I I', is a rod, 'e, one end of which projects through the wheel I', and has a two-armed lever, j. To each of these spindles are securedI two curved nippers, g, the outer ends of which are maintained in close contact with the adjacent rods d by the action of a pringcatch, 'which bears against a notched projection, t', of the rod, as seen in iig. 6, the latter view. representing the said lever f as in the act of moving frdm one-position to another. l

'fasst vA. lever, J, is hung tothe side-frame A of the machine, and is operatedby'apin, l, secured tecno sident'- the cog-wheelC, as showniin figs.v Land 5, the opposite arm of the lever beingipro'vidcd with @projecting pin, j, which, when 'thc' lever is operated, strikes one arm of the leverf, and partiallyturns its-,rod c, thusv moving b ack thehipprs g away from the adjacent rod d,- iig'. 6. 'ThIrodremains in this position ntil one arm of its leverf strikes n. pin, c, Sg.' Il, which projects from the side-'frame A', and which-turns the lever-.andits spindle to their first position. When the cog-wheel'C and its pin l have mede a complete revolution, 'the lever J is again operated, and anotherl of therods eis turned, the rods, and consequently the nippcrs, being thus operatedin succession bythe leve: for a purpose described hereafter. i

The machineshown in the drawingis arranged to print in ve'colers, ;and the five forms of type are secured at'equnl distances apart to the cylinder D, as lshown at f nLml, m, mand m, iig. 'lhese foi-ms are shown in the drawing, fig. 2, as simple types, each of 'a different letter, for. the stl-tvc of simplifying the description.

The vdifferent colored inks are contained in troughs,' p, iig. 8, which are secnrcd to projecting portions ef the opposite side-frames, and within eachl trough is arrangedfto turn', a carryig-roller, q. Distributing-rollers 1f turn in the side-frames of the machine, and l'motionis communicatdto thorn by a large 'cog-wheeLK, on' the shaft E, 4through the medium of anged pinions s, g. 1, which are arranged tdtnrnan'dmovev to and fro freely on stationary pins a', the cog-wheels K,'as show n in iig. 2, being -secnred toits shaft in an inclinedpositiou, so that, as it turns,`the distrihnting-rollersr will be rotated, and at the Sametime will have a reciprocating motion. imparted to them. i i I The inkig-rollers t and rollersu turn in radial arms L, which are attached to the side-frames A' und A by screws v, the' latter passing through slots 11", which permit the arms tot'nov'e longitudinally 4to alimit'ed'extent from or 'towardsthe centre of the shaft E, (see i'gs.V 3 and 4.) .A cam-wheel, d?, turns frcelyon the shaft E, at each end of the cylinder D, eachmheel being turned from the shaft E at a much slower rate of speed than -the `:-'cy1inder, by means` of the trainfof p'iion's w, and van internal ven rdnrheh w',(seefiigQ-.) A crm-'groeve,:i:, or rather an annular groove, the continuityV of which .isl intcrruptedbyffive cams, at', equal distances apart, is formed in each-nf the wheels P, and apin, y,projecting from each of the radial arms L, et'ersthisl groove.

The rollers u are carried by .the arms L, andthe inkisfconv'eyed' by th'ee'f rollers'froxn the rollers q, and deposited on lthe rollers r,`and, as the ylatter have a reciprocating as well as a rotary motion, therollers t, wh'-n in contact with them', are thoroughly inked. y l I The highest and the lowest in l'rin'g-rollers bear on separate-forms simultaneously, while the other rollers fare clear of the forms bnt'while any one of 'the intermediate inking-rollers'is acting on a form, all the others are clear of the forms fwhichthey have to ink, this operation of the diiierentinliug-rollers at dierent-intervals being effected by the cam-wheel? acting on 'the-arms L', lor b'y'ether c qniviilentI mechanism.

' Operalou. I I

As before remarked, the cylinder G is separated by longitudinal grooves b. into `fve segmental pla-tens, which in iig. 3 are numbc'redrespectively 1, A2, 3, 4',e.n d 5, while the frms m, ml, ivin, and m,"consis t of type for' printing the letters D U N KS, the 'colors'.supposedto beee'mployed being red, bluc,fgreen yellow, and black, arranged as indicated in the drawing. l'lhe'selverelparts ofthe machine. being .in the positipn illustrated in fig. 8, sheets of paper, each no largerthanone'f the segmental plat ens,'.are placed on. the inclined platform a, and iho cylinders are then caused to revolve-in-the 4direction of their arrows. v

The rstoperation is the seizing of a sheet of peper by the uppermost nippers. This` is ,caused vby one armi-0f the lever f of the said ni-ppers com ingin contact with the stationary pin' aii'g on the frame A, whichv mov-'cs the 'nippers towards the adjacentirod so that the paper is grasped between-them. "The nippers, having thus seized. the' paper, will, as thecylinders-- and wheels contine to tern, gradually find their-way into the nearestl longitudinal groove, b, iig. 3, and .the segment, 1,'of the roller G will act as the platen-.for this 'rst sheet of paper, while un impression is imparted to it by the'forml) of the cylinderD whenthatplatenand that fonin arrivent `such a relative position that vthe form will roll over and in contact with the paperbacked by that platen; in other werds, when the ferm andlplaten are simultaneously'and at the same speedcrossing the line g. 8, drawn through the centres of Vthe shafts E and F.- Itwill be understoodA that prior tothis impression 'f heing made by the form D on the paperfithored-inking apparatus'hadlbeen brought to bear against the form by means of the mechanism described above, iig. 3 of the drawing showing the red-inkin'g rollers in contact `with the form D'; hence the impression imparted to the paper will be a red, D, (seejdiagram', fg. 7:.) The sheet,

17Nstill held by the first-mentioned nippers, is carried around with'the ssme,-and moves in the'arc-of a circle'equal to one-sixthof its circumference, while the cylinder G moves in the arc of `arcircleoi the same extent as that traversedby the nippers, but 'equal to one-{ifth only of the circumference ofthe -piatsiisroller Gi; hn'ce,qwhen the sheekof paperis brought' to .ap'ositionto receive the'seco'nd impression from the ferm ,mh which is a type of the letter U, previously inked withzthc blueinking apparatus,'the segment 'marked 2, of the `roller G, ,Will be the platen for the paper whileit is receiving its impression,v which willbe a bide U. The paper` is carried round a third' timeand is transferred to the" segmental platen to receive the impression of a green from the formm. It is thena fonrthtini'dcarried rennd,. and is transferred to the segmental platen 4,`to receive a yellow impression of 'the letter K froiithe 4form in?, and is finally carried round a fifth time `and transferred to the segmental platen' 5, to receive a black impression-of the'fletter-Sfrom the form m. The sheet,'having now ,received the desired number of dierent-'colored impressions, it. becomes necessary to release it,"a duty which is accomplished in the following manner: l l I The pin Z, iig. 4, is the actuating-medium forreieaslng the paper, and this pin, once' in everyY revolution o f the form-cylinder D', so acts on thelev'erd as to depress its outer end, the pin' j on the latter bearing ,ag'ainst che arm of the leverf, (see iig.l6,) thereby turning the' .rod e, opening ons. of the nippers, and releasing tbesheet of peper. I But it will h'c bor'ne in mind that there are six nippers, caclref which makes one-sixth of a revolution While the pin Zis making but oneiEth of a revolution; hence,'any one set ofnippersis never in the proper position to be acted onby thepin Zthroug'h the medium of the mechanism described until it has completed ve revolutions, when it reaches Va point tobe acted onby the pin j of the lever the moment vthe latter is operated by the pin'l. After one set of nippers has been thus operated, theyfare carried round in the opened condition until they arrive at a point ready to seize another sheet of paper in the manner described above. 4

Hitherto I have referred to one sheet 'of paper only as being carried round five times in order topreceive ve impressions of different colors, but it will be seen that there are six nippers to iive segmental platens and forms, and that during the operation of the machine 've-nippers are on active duty, each holding and carrying a sheet of paper, while the sixth, is discharging a sheet,`ai1d remaining open` preparatory to seizing 'n.nother. One completely-printed sheetl o f paper is thus discharged from the machine at every revolution of the platen and form-cylinders.

As before remarked, the simple letters D UN K S have been illustrated and referred `twith the view of.

simplifying the description of the maehnes operation. Ifpproperly-engraved blocks be substituted for these simple letters, each block imparting different -colors-and forms tq thev paper, elaborate colored pictures may be produced, andthe capacity of the machine for the production of ornamental and pictorial objects in different colors may be increased by an increased number of .inking-apparatus, and a corresponding increase in the number of forms and segmental platens, the nippers innll cases 'being one in excess of the number of forms, and these nippers moving in a circle larger than and eccentric vvithfthat in which the platenrollenrl traverses, for on this the most' important feature of my invention depends, namely, that of transferring a sheet of paper from one platen to another, so that each form may have its own platen. The importance oi`.th isi`eature will be understood when it is borne inmind that each platen may require an independent backing up in order to bring` out the properimpression from the'fform appropriated to this platen, and it is only bytransferring the sheet of paper from one platen to another that this'important end can be obtained, for if the paper remained, during the operation of the machine, in contact )vith the same platen, to receive the impressions of different forms requiring diil'erent backing, the result would be a series oi' more or less imperfect impressions, and a blurred and unns ished picture. i Y

l Without confining myself to the precise construction or arrangement of parts herein described, I claim as my invention, and desire to secure by Letters Patent-- Y 1. The combination of the form-cylinder D', the cylinder G separated into as many segmental platens as thercare forms on the said cylinder D', and nippers constructed in the manner described, or any equivalent to v the same, but, in number, one in excess of that of the forms or segmental platens, and arranged to revolve in a circle larger in diameter than, but eccentric with, that of the platen-roller, all.substantiallyA as and for the puipose herein set forth. v c

2. The grooves or channels b of the cylinder and intervening segmental platens, in combination with the series of nippers, so many in number in respect to the grooves, and revolving inra course so eccentric with that of the cylinder that each set of nippers will transfcra sheet from one platen to the other, and will find its Way from one groove to another, all substantially as and forthepurpose herein s'et forth.

3. The said revolving nippers, moving in a circleleccentric with the cylinder G, having segmental platens, in number, one less than that ofthe nippers, in combination with the devices herein described, or any equivalent to the same,.by the aid of which the paper, carried by any one set of nippers, shall be rcleascd`, but not before it has been carried round as many times' as there are platens on the said'cylinder.

In testimony whereof, I have signedpmy name to this specification in the presence of two subscribing witnesses.

' A. A. DUNK.

Witnesses:

JOHN WHITE, W. J. R. DELANY. 

